ASTROSAT CZTI

Data Quality Report

Orbit 18551

Creation date: 2024-06-27T17:51:28.452719
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_188T01_9000002756_18551cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18551cztM0_level2_quad_clean.evt
Size (bytes)492,589,44094,561,920
Size469.8 MB 90.2 MB
Events in quadrant A3,121,154615,262
Events in quadrant B3,606,620625,541
Events in quadrant C3,372,553595,021
Events in quadrant D4,376,130574,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135451
B0149052
C0142621
D0172411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6503460.707366%
B65031362.091342%
C65031712.629556%
D65032974.567123%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7503 6503 0 0 0.00% 0.00%
B 7503 6503 62 62 0.83% 0.95%
C 7503 6503 61 61 0.81% 0.94%
D 7503 6503 246 246 3.28% 3.78%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 44250 267.19 797 778 162.7
A 13 254 11349 64.97 797 778 162.7
A 0 226 7064 38.64 797 778 162.7
B 3 64 469462 3107.99 792 770 150.8
B 12 111 17888 113.51 792 770 150.8
B 11 111 15811 99.74 792 770 150.8
C 9 54 300951 1689.52 756 762 177.7
C 14 238 118806 664.37 756 762 177.7
C 3 233 6783 33.89 756 762 177.7
D 7 238 1335419 7221.18 760 736 184.8
D 14 34 102286 549.42 760 736 184.8
D 2 234 26856 141.32 760 736 184.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter